/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.spark.sql.server.service.postgresql.execution.command

import org.apache.spark.sql.{Row, SparkSession}
import org.apache.spark.sql.execution.command.RunnableCommand


/**
 * This file includes classes for processing SQL queries generated by PostgreSQL JDBC drivers
 * and not supported in Spark.
 *
 * Note that we put `dummyData` so that `TreeNode.makeCopy` could work correctly; the function
 * assumes that a constructor of tree nodes has at least one parameter.
 */
case class BeginCommand(dummyData: Int = 0) extends RunnableCommand {
  override def run(sparkSession: SparkSession): Seq[Row] = Seq.empty[Row]
}
